Potassium Atomic number:19 Atomic mass:39 Number of protons:19 Number of electrons:19 Number of neutrons:19 Melting point:63.65 celsius Boiling point:774.0 celsius Type of Metal:Alkali metal Density:0.862 g/cm3 Date of Discovery:1807 Discover:Sir Humphrey Davy Color:silvery
Atomic number:19
Atomic mass:39
Number of protons:19
Number of electrons:19
Number of neutrons:19
Melting point:63.65 celsius
Boiling point:774.0 celsius
Type of Metal:Alkali metal
Density:0.862 g/cm3
Date of Discovery:1807
Discover:Sir Humphrey Davy
Color:silvery